| Scattering Properties of Atmospheric Aerosols over Lanzhou City and Applications Using an Integrating Nephelometer |
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| 作者姓名： | ZHANG Wu HU Bo CHEN Changhe DU Ping ZHANG Lei FENG Guanghong |
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| 作者单位： | [1]CollegeofAtmosphericSciences,LanzhouUniversity,Lanzhou730000 [2]CollegeofAtmosphericSciences,LanzhouUniversity,Lanzhou730000／／InstituteofAtmosphericPhysics,ChineseAcademyofSciences,Beijing100029 |
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| 摘 要： | The data, measured by a three-wavelength Integrating Nephelometer over Lanzhou City during the winters of 2001/2002 and 2002/2003 respectively, have been analyzed for investigating the scattering properties of atmospheric aerosols and exploring their relationship and the status of air pollution. The aerosol particle volume distribution is inverted with the measured spectral scattering coefficients. The results show that the daily variation of the aerosol scattering coefficients is in a tri-peak shape. The average ratio of backscattering coefficient to total scattering coefficient at 550 nm is 0.158; there exists an excellent correlation between the scattering coefficients and the concentration of PM10. The average ratio of the concentration of PM10 to the scattering coefficients is 0.37g m^-2, which is contingent on the optical parameters of aerosol particles such as the size distribution, etc.; an algorithm is developed for inverting the volume distribution of aerosol particles by using the histogram and Monte-Carlo techniques, and the test results show that the inversion is reasonable.
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| 关 键 词： | 积分浊度表 浮质光谱 散射系数 质点体积分布 大气科学 |
Scattering Properties of Atmospheric Aerosols over Lanzhou City and Applications Using an Integrating Nephelometer |
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| ZHANG Wu,HU Bo,CHEN Changhe,DU Ping,ZHANG Lei,FENG Guanghong.Scattering Properties of Atmospheric Aerosols over Lanzhou City and Applications Using an Integrating Nephelometer[J].Advances in Atmospheric Sciences,2004,21(6):848-856. |
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| Authors: | ZHANG Wu HU Bo CHEN Changhe DU Ping ZHANG Lei and FENG Guanghong |
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| Institution: | College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000 |
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| Abstract: | The data, measured by a three-wavelength Integrating Nephelometer over Lanzhou City during the winters of 2001/2002 and 2002/2003 respectively, have been analyzed for investigating the scattering properties of atmospheric aerosols and exploring their relationship and the status of air pollution. The aerosol particle volume distribution is inverted with the measured spectral scattering coe?cients. The results show that the daily variation of the aerosol scattering coe?cients is in a tri-peak shape. The average ratio of backscattering coe?cient to total scattering coe?cient at 550 nm is 0.158; there exists an excellent correlation between the scattering coe?cients and the concentration of PM10. The average ratio of the concentration of PM10 to the scattering coe?cients is 0.37 g m?2, which is contingent on the optical parameters of aerosol particles such as the size distribution, etc.; an algorithm is developed for inverting the volume distribution of aerosol particles by using the histogram and Monte-Carlo techniques, and the test results show that the inversion is reasonable. |
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| Keywords: | three-wavelength Integrating Nephelometer aerosol spectral scattering coe?cient PM10 particle volume distribution |
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